I have tried all of the resets and even completely reinstalled my OS after wiping my computer. However, it has to be some kind of software issue. I plugged in my external speakers into one of my usbs and it worked. The other one isn't working. And when I plug in my mouse, I get nothing.

I saw this error attempting to charge my Kindle. It worked very recently, and then suddenly the kindle was failing to charge on any USB power source so I was sure it was not my mac. I peeled open the USB charging cable because it seemed like the only common piece. Much to my surprise, I found a piece of broken pencil lead inside the USB plug, shorting out the 4 conductors. I turns out I'm happy to have the curcuit breaker on the mac shutdown the USB port. Of course I need a new cable now...

I have read the entire thread but am unable to find a solution that would get my MBP's USB drives back again. The only thing that I connected to my USB drive was my iphone and that too with the original charger cable. This was 1 month ago. It gave me the "drawing too much power error" and has stopped working since then.

Now I have nothing connected to my USB drive. I have tried resetting the PRAM (or whateve its called) as recommended on this thread, tried removing all attachments, restarting, etc etc.. However nothing seems to work.

Now when I try and connect a 2GB/4GB or an 8GB "pen drive" (portable USB drive), it does not seem to work. I have even tried connecting an original apple keyboard, a mouse, iphone/ipod/ipad, yet nothing works.

I did a hardware test today. The test says all is in order.

Can someone recommend a solution apart from the ones mentioned here (and please dont say that I need to take this to the apple store, coz I can figure that out for sure)

I didn't find a definitive solution – it just eventually resolved itself. Have you tried disconnecting everything, shutting the Mac down, removing the battery, unplugging it from the wall and leaving it for a while rather than just re-starting? Worth a try (if you haven't already).

Basically - I have an audio interface connected via USB, then one day i get the message 'usb device disabled drawing to much power....'

So i tried a few different cables, and 1 cable worked fine.

Now all of a sudden, the problem is back - the cable that was working fine is now not working fine.

I've tried 8 USB leads, reset the SMC, reset PRAM, etc etc......

All the 8 USB leads i have work fine with other stuff, but as soon as i plug this audio interface in, it doesnt see it. The interface is fine because i've tried it in another computer.

I've lost a lot of faith in apple products over the last year or 2. It seems like theres always some sort of bug/problem. This will be the end of the line for me now. I just can't trust the quality or reliability of their products anymore.

Yes, this was aggravating. It did finally shut down the port I have my keyboard plugged in to. The USB Port Hub worked for me. Buy one that has its own power source, of course. I plugged a hub with its own power source into one of my working USB ports and voila! No more error message. Thanks for that advice. I just bought a "Belkin" brand for @ $29.00. It has its own power source and seven USB ports. Again, thanks for the help.

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